Blowtorch



Dec. 23, 1952 HlNToN 2,622,667

BLOWTORCH Filed NOV. 14, 1947 v 2 SHEETS-SHEET l ATTD RN EYE PatentedDec. 23, 1952 UNITED STATES PATENT OFFICE BLOWTORGH Fred Hinton,Modesto, Calif.

Application November 14, 1947, Serial No. 785,927

1 Claim. 1

This invention relates to an attachment for a ninety degree burningtorch whereby the torch can be quickly converted to burn circles ofvarious sizes. a

An object of the invention is to provide a device of this character thatwill permit a quick conversion of the torch without the necessity ofcutting oii the acetylene and oxygen valves at the torches.

The old type of circle burners required the complete change of burnerunits which necessitated cutting 01f the valves and then disconnectingthe burner from the supply lines.

The type of burner attachment constructed in accordance with theinvention eliminates these disadvantages, and saves time in theconversion of the burners involved.

With the above and other objects and advantages in view, the inventionconsists of the novel details of construction, arrangement andcombination of parts more fully hereinafter described, claimed andillustrated in the accompanying drawing in which:

Figure 1 is an elevational view partly in section of an embodiment oftheinvention as connected to a ninety degree burner;

Figure 2 is a sectional view on the line 2-2 of Figure 1 and Figure 3 isa sectional view on the line 33 of Figure 2.

Figure 4 is a longitudinal section through the adapter, head carried bythe tubes and head illustrating the connecting passages through theparts and with the parts shown on an enlarged scale.

Figure 5 is a cross section taken on line 5-5 of Figure 4.

Figure 6 is a View similar to that shown in Figure 4 showing the burnertip positioned in the head carried by the tubes.

Figure 7 is a view also similar to that shown in Figure i showing theadapter with the parts thereof separated and connected by dot and dashlines.

Referring more in detail to the drawing, the reference numeral ii!designates a ninety degree burner. The burner it comprises the hand control valve II, which is connected to the supply tanks of acetylene andoxygen, and is controlled by the control lever l2.

The valve H is connected to the pipes 13 and Hi respectively, whichconduct the acetylene and oxygen from the valve H to the manifold ormixing head I5.

Under ordinary circumstances, the tip It would be cemented to themanifold [5, but to connect the burner to a circle burner, theattachment or adapter I! embodying the invention is connected to themanifold I5.

This adapter has the conical end or shank is similar in all respects tothe conical end or shank (8' of the tip l6, and this tip is providedwith openings l9 as is the end It provided with openings 19'. Theshoulder or collar 28 on the end l8 seats on a corresponding shoulder inthe head I5 and prevents mixing of the two gases within the manifold [5in a manner similar to the functioning of the shoulder 20 on the tip it.The threaded end 2| of the adapter is similar to the threaded portion 21of the tip it. Thus when the adapter I! is connected to the manifold l5,the same construction is encountered as if the tip it were connected tothe manifold 15. The nut 22 on the adapter provides means for turningthe adapter by a wrench or the like for threading the adapter or theattachment to the manifold IS in the same manner as the nut 22' is used,as will be later described.

The attachment comprises the tubular portion 23 having ducts or passagesl9 which extend from the opening lid in the inner end of the head I 5 toan annular channel 2 in the collar 25 of the adapter and the channel 2is connected to an opening 43 in the inner end of the manifold 21 by atube 24. The adapter is also provided with a center passage 3, the innerend of which is provided with openings i that extend into an annularchannel 5 to provide communicating means between the center passage 3and the tube it. The gasses are thus still separated at the time theyenter the manifold or mixing head 21 of the attachment into which thetip it is inserted. The tip i6 is also provided with a center passage 6,the inner end of which is provided with openings 7 that extend into achannel 8 that connects the passage 6 to the tube 25. The nut 22provides means for turning the tip 16 for screwing the tip in place inthe manifold 21 in the same manner as the nut 22 secures the adapter tothe manifold l5.

The manifold 21 is provided adjacent its outer end with an annularrecess 28 in which is seated the collar 29. Secured at right angles tothe collar 29 is an arm 83 on which is slidably mounted the block 3|.The block 3i carries a set screw 32, whereby the block is fixed to thearm 3d, and a supporting leg or pin 33 which supports the outer end ofthe arm 38.

It will be seen in Figure 2 that the tip l8 carrice the mixing openings34 that are conventional with tips of this construction.

In use, when it is desired to cut a circle, the

tip I 6 is connected to the attachment I1, and the attachment I1 isconnected to the manifold [5. This does not interfere with the flow ofthe gasses, since such gasses are cut off at the valve H. The leg 33,which is pointed at 35 at its free end, is positioned at the center ofthe circle to be cut. The tip is set a distance from the leg 33, equalto the radius of the circle to be cut. The reversal of the operation canbe used also, where the tip is set at the periphery of the circle, andthe block is slid on the arm 30 until the leg is located at the centerof the circle. The set screw 32 is tightened, and the burner is readyfor operation.

Rotating the burner on the axis formed by the leg 33 will cut the circledesired.

There has thus been provided an attachment which will convert a ninetydegree burner into a circle cutting burner. Such conversion is rapidlyand easily made without interfering with the flow of gasses to theburner.

It is believed that from the foregoing description, the construction andoperation of the device will be apparent to those skilled in the art,and it is to be understood that changes in the minor details ofconstruction, arrangement and combination of parts can be resorted to,without departing from the spirit of the invention or the scope of theappended claim.

Having thus described the invention, what is claimed as new and desiredto be secured by Letters Patent is:

In a blow torch having acetylene and oxygen tubes extending from acontrol valve, a hollow tapering cylindrical shaped head carried by thetubes with the tubes entering one side of the head at spaced points andwith the head tapering outwardly away from the tubes, said head havingan annular shoulder therein positioned between the said spaced pointswhere the tubes are connected to the side of the head and the outerlarger end thereof being internally threaded, an adapter having a shankwith openings in the end, an annular collar spaced from the end andpositioned to seat on the annular shoulder of the head and a threadedsection corresponding with the internally threaded end of the head, saidthreaded section of the adapter being spaced from a collar providing anannular recess and the shank of the adapter having an opening thereinextended from the recess into the interior of the shank, said adapteralso having hollow cylindrical shaped head on the end of the shankopposite to the end positioned in the tapering cylindrical shaped headcarried by the tubes and positioned with the longitudinal axis of theadapter head perpendicular to the longitudinal axis of the shank of theadapter, saidadapterhead having spaced openings in one side thereof withone of said openings communicating with the openings in the end of theshank and the other communicating with the opening that extends from theinterior of the shank to the annular recess between the collar andthreads on the outer surface thereof, said adapter head having anannular shoulder therein positioned between said spaced openings, "andthe end of the adapter head extended from the end having the spacedopenings therein having internal threads corresponding with the threadsof the head carried by the tubes from the control valve, and a burnertip having .a shank with a center passage therein and with radiallypositioned passages extended therethrough and having an annular collaron the outer surface and spaced from one end whereby with the tippositioned in the head of the adapter the annular collar seats againstthe shoulder in the head of the adapter wherein said radially positionedpassages extended through the burner tip shank are in communication withthe openings extended through the shank of the adapter, said shank ofthe burner tip also having an opening extended from the center passageto thc opening communicating with the center passage of the shank of theadapter, the shank of said burner tip also having threads thereoncorresponding with the internal threads of the adapter head and also ofthe head carried by the tubes.

FRED HINTON.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS

